linux-kernel - Re: [PATCH 3/4 v4] video, sm501: add OF binding to support SM501

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Date:	Tue, 25 Jan 2011 15:38:35 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Heiko Schocher <hs@...x.de>
Cc:	linuxppc-dev@...ts.ozlabs.org, linux-fbdev@...r.kernel.org,
	devicetree-discuss@...abs.org, Ben Dooks <ben@...tec.co.uk>,
	Vincent Sanders <vince@...tec.co.uk>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-kernel@...r.kernel.org, Randy Dunlap <rdunlap@...otime.net>
Subject: Re: [PATCH 3/4 v4] video, sm501: add OF binding to support SM501

On Mon, Jan 24, 2011 at 10:57:38AM +0100, Heiko Schocher wrote:
> - changes since v1:
>   add Ben Dooks, Vincent Sanders and Samuel Ortiz to cc, as suggested from
>   Paul Mundt.
> - changes since v2:
>   add comments from Randy Dunlap:
>   - move parameter documentation to Documentation/fb/sm501.txt
> - changes since v3:
>   - rebased against v2.6.38-rc2
>   - split in 3 patches
>     - of support patch
>       - get rid of "#if defined(CONFIG_PPC_MPC52xx)" usage
>         hide this in DTS, as Paul suggested.
>     - i/o routine patch
>     - edid support patch
> 
[snip]

> diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c
> index 30b53ae..2ae57aa 100644
> --- a/drivers/video/sm501fb.c
> +++ b/drivers/video/sm501fb.c
> @@ -1729,6 +1729,15 @@ static int sm501fb_init_fb(struct fb_info *fb,
>  		FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
>  		FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
>  
> +#if defined(CONFIG_PPC_MPC52xx)
> +#ifdef __BIG_ENDIAN
> +	if (of_get_property(info->dev->parent->of_node, "little-endian", NULL))
> +		fb->flags |= FBINFO_FOREIGN_ENDIAN;
> +#else
> +	if (of_get_property(info->dev->parent->of_node, "big-endian", NULL))
> +		fb->flags |= FBINFO_FOREIGN_ENDIAN;
> +#endif
> +#endif
>  	/* fixed data */
>  
>  	fb->fix.type		= FB_TYPE_PACKED_PIXELS;

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